Sofa



FIG. 1 is a right front perspective view of a sofa showing my new design;

FIG. 2 is a top plain view thereof;

FIG. 3 is a right rear perspective view thereof;

FIG. 4 is a right front perspective exploded view, shown in the reclined position thereof;

FIG. 5 is a front elevational view, shown in the non-reclined position thereof;

FIG. 6 is a rear elevational view thereof; and,

FIG. 7 is a left elevational view thereof, the right side elevation being a mirror image. 

CLAIM The ornamental design for a sofa, as shown and described. 